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Cloud DR Replication

Cloud DR replication provides you with flexible and superb data replication functions, including remote data backup and restoration, continuous support for service data, and disaster recovery. Remote replication is a data mirroring technology that copies data on a local storage device to a remote storage device. It retains multiple data replicas at two or more sites, removing single-site data loss risks. Cloud remote replication specifically refers to remote replication with a DESS device as the remote device.

Implementation of Cloud Remote Replication

Cloud remote replication replicates data based on storage systems and is independent of upper-layer host services. Full implementation of cloud remote replication consists of five phases: creating a cloud remote replication pair, replicating data, switching services, restoring data, and restoring the pair.

Figure 1 Cloud remote replication process

Constraints

  • Disk sizes of the primary end and secondary end must be the same.
  • The DR switchover cannot be implemented automatically.